Convex Programmer's Calculator vs nRF Connect for Mobile
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Convex Programmer's Calculator
Convert numbers between hexadecimal, decimal, octal, and binary. Perform byte flips, bit shifts, and calculate two's complement. Features bit indicators and word grouping for improved binary readability.
- Number base conversion
- Two's complement calculation
- Byte flipping for endianness
- Left and right bit shifting
- Binary readability enhancements
- Copy, paste, and clear functionality
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Easily convert between hexadecimal, decimal, octal, and binary. Calculate the two's complement of any number. Flip a number's bytes to switch its endianness. Bit-shift left and right. Bit indicators and word grouping make binary easier to read. Tap the number to copy, paste, and clear. Swipe left or right on the number to backspace.
nRF Connect for Mobile
This app is a versatile tool for scanning, exploring, and communicating with Bluetooth Low Energy devices. It also enables your device to act as a peripheral and supports firmware updates for compatible devices.
- Scan and discover Bluetooth LE peripherals
- Communicate with Bluetooth LE devices
- Advertise as a Bluetooth LE peripheral
- Update compatible device firmware (DFU)
- Filter scanned peripherals
- Live RSSI chart
- Log BLE function calls
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nRF Connect is a powerful generic tool that allows you to scan and explore your Bluetooth Low Energy (henceforth Bluetooth LE, also called Bluetooth Version 4.0+ of the Bluetooth specification) devices and communicate with them. nRF Connect also allows your iOS device to advertise as a peripheral, with full support of many of Bluetooth SIG adopted profiles. Additionally, nRF Connect supports Nordic Semiconductor’s Device Firmware Update profile (DFU) capabilities, allowing you to update compatible peripherals! + Features: • Supports DFU on all Nordic Semiconducto-powered devices. • Supports Nordic Thingy™ from Nordic Semiconductor. • Scan and discover nearby Bluetooth LE peripherals. • Filter Scanned Peripherals by Name, Manufacturer, Services (Advertised & Connected) and RSSI Level. • Parsing Multiple Formats of Bluetooth LE Advertisement Data. • Live RSSI Chart of Scanned Bluetooth LE Peripherals. • Complete iPad Support, including Multi-Tasking and Mouse Support as of 13.4. • Logs: Including BLE Function calls, and Export Function as CSV and Text. • Privacy-Oriented: Full-Disclosure of Scanned Data, Advertised Data, and User-Performed Actions held by nRF Connect. • Connecting to Any Connectable Bluetooth LE Smart Device. • Discovery of Services, Characteristics and Descriptors. • Read and Write Characteristics and Descriptors. • Enable and Disable Notifications and Indications. • Advertising as a Bluetooth LE Peripheral. • Setting up a Bluetooth LE (Peripheral) Server and Notifying/Indicating back to connected Central(s). • Low-Fat: nRF Connect for iOS is Very Small, so You Can Always Keep Us With You! >= Requirements: • iOS 16.0 and above. - Notes: nRF Connect also works with our Development Kits, which you may acquire online here: https://www.nordicsemi.com/eng/buy-online
Screenshots
Verdict
The clearest difference is update cadence: nRF Connect for Mobile at every 5 weeks against Convex Programmer's Calculator's every 8 months. nRF Connect for Mobile also leads on ratings volume (472 vs 6). On price, rating, review sentiment and ads there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Convex Programmer's Calculator holds the better App Store score, 4.7 against 4.5. That said, the two scores are not equally well evidenced: nRF Connect for Mobile has 472 ratings behind it against 6, so its average is the more settled of the two. Written reviews complicate that: 67% of Convex Programmer's Calculator's written reviews are positive against 71% of nRF Connect for Mobile's, so the app with the better star average is not the one people write more warmly about.
Convex Programmer's Calculator ships an update every 8 months, nRF Connect for Mobile every 5 weeks. The most recent releases landed on September 27, 2026 and October 20, 2026 respectively.
| Parameter | Convex Programmer's Calculator | nRF Connect for Mobile |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (6 ratings) — better | 4.5 (472 ratings) |
| Positive reviews | 66.7% of reviews | 70.7% of reviews — better |
| Number of ratings | 6 | 472 — better |
| Update frequency | Every 8 months | Every 5 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 16.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 0 MB | 15 MB |
| Age rating | 4+ | 4+ |
| Developer | Matthew Daigle | Nordic Semiconductor ASA |
Customer experience
Convex Programmer's Calculator
nRF Connect for Mobile
Bugs and requests
Convex Programmer's Calculator
Not enough reviews yet to summarise bugs or requests.
nRF Connect for Mobile
Reported bugs
4 issues- Can't read data from Bluetooth device
- Tries to ask for Bluetooth connection when Bluetooth is off. Asks to connect to devices when Bluetooth is off. Who knows what this app is doing in the background without permission?! What ever it is , it ain't good
- Tapping "tabs" doesn't work (nothing changes in the UI). To get some response from tapping UI controls typically requires (a) launching nRF Connect, (b) switching to another app, (c) switching back to nRF Connect. I've tried uninstalling and re-downloading. Same result. This used to be the bee's knees of BLE tools but it's only worth 1 star at the moment (v2.7.11).
- Cant go past the initial announcement. The app is unresponsive to the taps.
Requested features
4 requests- Where's the mac addresses
- Max rssi limit
- Log view
- We need macros in iOS version
In-app purchases
Convex Programmer's Calculator
No in-app purchases
nRF Connect for Mobile
No in-app purchases
Questions
Is Convex Programmer's Calculator free?
Is nRF Connect for Mobile free?
Which has better reviews, Convex Programmer's Calculator or nRF Connect for Mobile?
Do Convex Programmer's Calculator or nRF Connect for Mobile have ads?
Which is updated more often, Convex Programmer's Calculator or nRF Connect for Mobile?
Other comparisons
